| Description |
Colourless, cubic crystals or a white crystalline powder
|
Solubility |
Freely soluble in water; soluble in glycerin; slightly soluble in alcohol
|
| Identification |
-
|
Identification 'A' |
Sodium : Gives the general test for sodium
|
| Identification ‘B’ |
Chlorides -The precipitate should dissolve easily with the possible exception of a few large particles, which should dissolve more slowly
|
Assay (on dried basis) |
99.0%-100.5%
|
| Barium |
Any opalescences in the test solution should not more intense that in reference solution
|
Ferrocyanide |
No blue colour should be develops in 10 min
|
| Iodide |
No blue colour should be observed
|
Iron |
NMT 2 ppm
|
| Potassium |
NMT 500 ppm
|
Magnesium and alkali earth metals |
NMT 100 ppm
|
| Nitrates |
Absorbance should be NMT 0.01
|
Sulphates |
NMT 200 ppm
|
| Appearance of solution |
The solution should be clear and colouless
|
Acidity or alkalinity |
NMT 0.5 mL of 0.01 N hydrochloric acid or 0.01 N sodium hydroxide should be required to change the color of this solution
|